From 5871150cac2a3a93dbcd9f9721771d6128c6d3ae Mon Sep 17 00:00:00 2001
From: Arnaud Simon <arnaudsimon@apache.org>
Date: Wed, 4 Jun 2008 14:30:15 +0000
Subject: QPID-1120: Changed addDeliveredMessage and commit so
 session.completed is sent before credits dry up

git-svn-id: https://svn.apache.org/repos/asf/incubator/qpid/trunk@663124 13f79535-47bb-0310-9956-ffa450edef68
---
 .../java/org/apache/qpid/client/AMQSession.java    |  2 +-
 .../org/apache/qpid/client/AMQSession_0_10.java    | 65 +++++++++++++++++-----
 2 files changed, 52 insertions(+), 15 deletions(-)

(limited to 'qpid/java')

diff --git a/qpid/java/client/src/main/java/org/apache/qpid/client/AMQSession.java b/qpid/java/client/src/main/java/org/apache/qpid/client/AMQSession.java
index 4ade83e013..7f95edf60f 100644
--- a/qpid/java/client/src/main/java/org/apache/qpid/client/AMQSession.java
+++ b/qpid/java/client/src/main/java/org/apache/qpid/client/AMQSession.java
@@ -1919,7 +1919,7 @@ public abstract class AMQSession extends Closeable implements Session, QueueSess
         }
     }
 
-    private void checkTransacted() throws JMSException
+    protected void checkTransacted() throws JMSException
     {
         if (!getTransacted())
         {
diff --git a/qpid/java/client/src/main/java/org/apache/qpid/client/AMQSession_0_10.java b/qpid/java/client/src/main/java/org/apache/qpid/client/AMQSession_0_10.java
index 0753ee539a..d802cacf79 100644
--- a/qpid/java/client/src/main/java/org/apache/qpid/client/AMQSession_0_10.java
+++ b/qpid/java/client/src/main/java/org/apache/qpid/client/AMQSession_0_10.java
@@ -43,7 +43,6 @@ import org.slf4j.LoggerFactory;
 import javax.jms.*;
 import javax.jms.IllegalStateException;
 
-import java.util.concurrent.ConcurrentLinkedQueue;
 import java.util.HashMap;
 import java.util.UUID;
 import java.util.Map;
@@ -73,6 +72,12 @@ public class AMQSession_0_10 extends AMQSession
 
     // a ref on the qpidity connection
     protected org.apache.qpidity.nclient.Connection _qpidConnection;
+
+    /**
+     * USed to store the range of in tx messages
+     */
+    private RangeSet _txRangeSet = new RangeSet();
+    private int _txSize = 0;
     //--- constructors
 
     /**
@@ -276,19 +281,9 @@ public class AMQSession_0_10 extends AMQSession
         {
             _dispatcher.rollback();
         }
-
-        RangeSet ranges = new RangeSet();
-        while (true)
-        {
-            Long tag = _deliveredMessageTags.poll();
-            if (tag == null)
-            {
-                break;
-            }
-
-            ranges.add((int) (long) tag);
-        }
-        getQpidSession().messageRelease(ranges, Option.SET_REDELIVERED);
+        getQpidSession().messageRelease(_txRangeSet, Option.SET_REDELIVERED);
+        _txRangeSet.clear();
+        _txSize = 0;
     }
 
     /**
@@ -743,4 +738,46 @@ public class AMQSession_0_10 extends AMQSession
         return getQpidSession().queueQuery(amqd.getQueueName()).get().getMessageCount();
     }
 
+
+    /**
+     * Store non committed messages for this session
+     * With 0.10 messages are consumed with window mode, we must send a completion
+     * before the window size is reached so credits don't dry up. 
+     * @param id
+     */
+    @Override protected void addDeliveredMessage(long id)
+    {
+        _txRangeSet.add((int) id);
+        _txSize++;
+        // this is a heuristic, we may want to have that configurable 
+        if( _txSize > _connection.getMaxPrefetch() / 2 )
+        {
+           // send completed so consumer credits don't dry up
+           getQpidSession().messageAcknowledge(_txRangeSet, false);
+           _txSize = 0;
+        }
+    }
+
+    @Override public void commit() throws JMSException
+    {
+        checkTransacted();
+        try
+        {
+            if( _txSize > 0 )
+            {
+                getQpidSession().messageAcknowledge(_txRangeSet, true);
+                _txRangeSet.clear();
+                _txSize = 0;
+            }
+            sendCommit();
+        }
+        catch (AMQException e)
+        {
+            throw new JMSAMQException("Failed to commit: " + e.getMessage(), e);
+        }
+        catch (FailoverException e)
+        {
+            throw new JMSAMQException("Fail-over interrupted commit. Status of the commit is uncertain.", e);
+        }
+    }
 }
-- 
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